Class: AWSCDK::Route53::CfnHealthCheck::HealthCheckConfigProperty

Inherits:
Jsii::Struct
  • Object
show all
Defined in:
route53/cfn_health_check.rb

Overview

A complex type that contains information about the health check.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(type:, alarm_identifier: nil, child_health_checks: nil, enable_sni: nil, failure_threshold: nil, fully_qualified_domain_name: nil, health_threshold: nil, insufficient_data_health_status: nil, inverted: nil, ip_address: nil, measure_latency: nil, port: nil, regions: nil, request_interval: nil, resource_path: nil, routing_control_arn: nil, search_string: nil) ⇒ HealthCheckConfigProperty

Returns a new instance of HealthCheckConfigProperty.

Parameters:

  • type (String)

    The type of health check that you want to create, which indicates how Amazon Route 53 determines whether an endpoint is healthy.

  • alarm_identifier (AWSCDK::IResolvable, AWSCDK::Route53::CfnHealthCheck::AlarmIdentifierProperty, nil) (defaults to: nil)

    A complex type that identifies the CloudWatch alarm that you want Amazon Route 53 health checkers to use to determine whether the specified health check is healthy.

  • child_health_checks (Array<String>, nil) (defaults to: nil)

    (CALCULATED Health Checks Only) A complex type that contains one ChildHealthCheck element for each health check that you want to associate with a CALCULATED health check.

  • enable_sni (Boolean, AWSCDK::IResolvable, nil) (defaults to: nil)

    Specify whether you want Amazon Route 53 to send the value of FullyQualifiedDomainName to the endpoint in the client_hello message during TLS negotiation.

  • failure_threshold (Numeric, nil) (defaults to: nil)

    The number of consecutive health checks that an endpoint must pass or fail for Amazon Route 53 to change the current status of the endpoint from unhealthy to healthy or vice versa.

  • fully_qualified_domain_name (String, nil) (defaults to: nil)

    Amazon Route 53 behavior depends on whether you specify a value for IPAddress .

  • health_threshold (Numeric, nil) (defaults to: nil)

    The number of child health checks that are associated with a CALCULATED health check that Amazon Route 53 must consider healthy for the CALCULATED health check to be considered healthy.

  • insufficient_data_health_status (String, nil) (defaults to: nil)

    When CloudWatch has insufficient data about the metric to determine the alarm state, the status that you want Amazon Route 53 to assign to the health check: - Healthy : Route 53 considers the health check to be healthy.

  • inverted (Boolean, AWSCDK::IResolvable, nil) (defaults to: nil)

    Specify whether you want Amazon Route 53 to invert the status of a health check, for example, to consider a health check unhealthy when it otherwise would be considered healthy.

  • ip_address (String, nil) (defaults to: nil)

    The IPv4 or IPv6 IP address of the endpoint that you want Amazon Route 53 to perform health checks on.

  • measure_latency (Boolean, AWSCDK::IResolvable, nil) (defaults to: nil)

    Specify whether you want Amazon Route 53 to measure the latency between health checkers in multiple AWS regions and your endpoint, and to display CloudWatch latency graphs on the Health Checks page in the Route 53 console.

  • port (Numeric, nil) (defaults to: nil)

    The port on the endpoint that you want Amazon Route 53 to perform health checks on.

  • regions (Array<String>, nil) (defaults to: nil)

    A complex type that contains one Region element for each region from which you want Amazon Route 53 health checkers to check the specified endpoint.

  • request_interval (Numeric, nil) (defaults to: nil)

    The number of seconds between the time that Amazon Route 53 gets a response from your endpoint and the time that it sends the next health check request.

  • resource_path (String, nil) (defaults to: nil)

    The path, if any, that you want Amazon Route 53 to request when performing health checks.

  • routing_control_arn (String, nil) (defaults to: nil)

    The Amazon Resource Name (ARN) for the Route 53 Application Recovery Controller routing control.

  • search_string (String, nil) (defaults to: nil)

    If the value of Type is HTTP_STR_MATCH or HTTPS_STR_MATCH , the string that you want Amazon Route 53 to search for in the response body from the specified resource.



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# File 'route53/cfn_health_check.rb', line 615

def initialize(type:, alarm_identifier: nil, child_health_checks: nil, enable_sni: nil, failure_threshold: nil, fully_qualified_domain_name: nil, health_threshold: nil, insufficient_data_health_status: nil, inverted: nil, ip_address: nil, measure_latency: nil, port: nil, regions: nil, request_interval: nil, resource_path: nil, routing_control_arn: nil, search_string: nil)
  @type = type
  Jsii::Type.check_type(@type, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "type")
  @alarm_identifier = alarm_identifier.is_a?(Hash) ? ::AWSCDK::Route53::CfnHealthCheck::AlarmIdentifierProperty.new(**alarm_identifier.transform_keys(&:to_sym)) : alarm_identifier
  Jsii::Type.check_type(@alarm_identifier, JSON.parse(Base64.strict_decode64("eyJ1bmlvbiI6eyJ0eXBlcyI6W3siZnFuIjoiYXdzLWNkay1saWIuSVJlc29sdmFibGUifSx7ImZxbiI6ImF3cy1jZGstbGliLmF3c19yb3V0ZTUzLkNmbkhlYWx0aENoZWNrLkFsYXJtSWRlbnRpZmllclByb3BlcnR5In1dfX0=")), "alarmIdentifier") unless @alarm_identifier.nil?
  @child_health_checks = child_health_checks
  Jsii::Type.check_type(@child_health_checks, JSON.parse(Base64.strict_decode64("eyJjb2xsZWN0aW9uIjp7ImVsZW1lbnR0eXBlIjp7InByaW1pdGl2ZSI6InN0cmluZyJ9LCJraW5kIjoiYXJyYXkifX0=")), "childHealthChecks") unless @child_health_checks.nil?
  @enable_sni = enable_sni
  Jsii::Type.check_type(@enable_sni, JSON.parse(Base64.strict_decode64("eyJ1bmlvbiI6eyJ0eXBlcyI6W3sicHJpbWl0aXZlIjoiYm9vbGVhbiJ9LHsiZnFuIjoiYXdzLWNkay1saWIuSVJlc29sdmFibGUifV19fQ==")), "enableSni") unless @enable_sni.nil?
  @failure_threshold = failure_threshold
  Jsii::Type.check_type(@failure_threshold, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJudW1iZXIifQ==")), "failureThreshold") unless @failure_threshold.nil?
  @fully_qualified_domain_name = fully_qualified_domain_name
  Jsii::Type.check_type(@fully_qualified_domain_name, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "fullyQualifiedDomainName") unless @fully_qualified_domain_name.nil?
  @health_threshold = health_threshold
  Jsii::Type.check_type(@health_threshold, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJudW1iZXIifQ==")), "healthThreshold") unless @health_threshold.nil?
  @insufficient_data_health_status = insufficient_data_health_status
  Jsii::Type.check_type(@insufficient_data_health_status, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "insufficientDataHealthStatus") unless @insufficient_data_health_status.nil?
  @inverted = inverted
  Jsii::Type.check_type(@inverted, JSON.parse(Base64.strict_decode64("eyJ1bmlvbiI6eyJ0eXBlcyI6W3sicHJpbWl0aXZlIjoiYm9vbGVhbiJ9LHsiZnFuIjoiYXdzLWNkay1saWIuSVJlc29sdmFibGUifV19fQ==")), "inverted") unless @inverted.nil?
  @ip_address = ip_address
  Jsii::Type.check_type(@ip_address, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "ipAddress") unless @ip_address.nil?
  @measure_latency = measure_latency
  Jsii::Type.check_type(@measure_latency, JSON.parse(Base64.strict_decode64("eyJ1bmlvbiI6eyJ0eXBlcyI6W3sicHJpbWl0aXZlIjoiYm9vbGVhbiJ9LHsiZnFuIjoiYXdzLWNkay1saWIuSVJlc29sdmFibGUifV19fQ==")), "measureLatency") unless @measure_latency.nil?
  @port = port
  Jsii::Type.check_type(@port, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJudW1iZXIifQ==")), "port") unless @port.nil?
  @regions = regions
  Jsii::Type.check_type(@regions, JSON.parse(Base64.strict_decode64("eyJjb2xsZWN0aW9uIjp7ImVsZW1lbnR0eXBlIjp7InByaW1pdGl2ZSI6InN0cmluZyJ9LCJraW5kIjoiYXJyYXkifX0=")), "regions") unless @regions.nil?
  @request_interval = request_interval
  Jsii::Type.check_type(@request_interval, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJudW1iZXIifQ==")), "requestInterval") unless @request_interval.nil?
  @resource_path = resource_path
  Jsii::Type.check_type(@resource_path, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "resourcePath") unless @resource_path.nil?
  @routing_control_arn = routing_control_arn
  Jsii::Type.check_type(@routing_control_arn, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "routingControlArn") unless @routing_control_arn.nil?
  @search_string = search_string
  Jsii::Type.check_type(@search_string, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "searchString") unless @search_string.nil?
end

Instance Attribute Details

#alarm_identifierAWSCDK::IResolvable, ... (readonly)

A complex type that identifies the CloudWatch alarm that you want Amazon Route 53 health checkers to use to determine whether the specified health check is healthy.



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# File 'route53/cfn_health_check.rb', line 685

def alarm_identifier
  @alarm_identifier
end

#child_health_checksArray<String>? (readonly)

(CALCULATED Health Checks Only) A complex type that contains one ChildHealthCheck element for each health check that you want to associate with a CALCULATED health check.



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# File 'route53/cfn_health_check.rb', line 690

def child_health_checks
  @child_health_checks
end

#enable_sniBoolean, ... (readonly)

Specify whether you want Amazon Route 53 to send the value of FullyQualifiedDomainName to the endpoint in the client_hello message during TLS negotiation.

This allows the endpoint to respond to HTTPS health check requests with the applicable SSL/TLS certificate.

Some endpoints require that HTTPS requests include the host name in the client_hello message. If you don't enable SNI, the status of the health check will be SSL alert handshake_failure . A health check can also have that status for other reasons. If SNI is enabled and you're still getting the error, check the SSL/TLS configuration on your endpoint and confirm that your certificate is valid.

The SSL/TLS certificate on your endpoint includes a domain name in the Common Name field and possibly several more in the Subject Alternative Names field. One of the domain names in the certificate should match the value that you specify for FullyQualifiedDomainName . If the endpoint responds to the client_hello message with a certificate that does not include the domain name that you specified in FullyQualifiedDomainName , a health checker will retry the handshake. In the second attempt, the health checker will omit FullyQualifiedDomainName from the client_hello message.



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# File 'route53/cfn_health_check.rb', line 701

def enable_sni
  @enable_sni
end

#failure_thresholdNumeric? (readonly)

The number of consecutive health checks that an endpoint must pass or fail for Amazon Route 53 to change the current status of the endpoint from unhealthy to healthy or vice versa.

For more information, see How Amazon Route 53 Determines Whether an Endpoint Is Healthy in the Amazon Route 53 Developer Guide .

FailureThreshold is not supported when you specify a value for Type of RECOVERY_CONTROL .

Otherwise, if you don't specify a value for FailureThreshold , the default value is three health checks.



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# File 'route53/cfn_health_check.rb', line 712

def failure_threshold
  @failure_threshold
end

#fully_qualified_domain_nameString? (readonly)

Amazon Route 53 behavior depends on whether you specify a value for IPAddress .

If you specify a value for IPAddress :

Amazon Route 53 sends health check requests to the specified IPv4 or IPv6 address and passes the value of FullyQualifiedDomainName in the Host header for all health checks except TCP health checks. This is typically the fully qualified DNS name of the endpoint on which you want Route 53 to perform health checks.

When Route 53 checks the health of an endpoint, here is how it constructs the Host header:

  • If you specify a value of 80 for Port and HTTP or HTTP_STR_MATCH for Type , Route 53 passes the value of FullyQualifiedDomainName to the endpoint in the Host header.
  • If you specify a value of 443 for Port and HTTPS or HTTPS_STR_MATCH for Type , Route 53 passes the value of FullyQualifiedDomainName to the endpoint in the Host header.
  • If you specify another value for Port and any value except TCP for Type , Route 53 passes FullyQualifiedDomainName:Port to the endpoint in the Host header.

If you don't specify a value for FullyQualifiedDomainName , Route 53 substitutes the value of IPAddress in the Host header in each of the preceding cases.

If you don't specify a value for IPAddress :

Route 53 sends a DNS request to the domain that you specify for FullyQualifiedDomainName at the interval that you specify for RequestInterval . Using an IPv4 address that DNS returns, Route 53 then checks the health of the endpoint.

If you don't specify a value for IPAddress , Route 53 uses only IPv4 to send health checks to the endpoint. If there's no record with a type of A for the name that you specify for FullyQualifiedDomainName , the health check fails with a "DNS resolution failed" error.

If you want to check the health of multiple records that have the same name and type, such as multiple weighted records, and if you choose to specify the endpoint only by FullyQualifiedDomainName , we recommend that you create a separate health check for each endpoint. For example, create a health check for each HTTP server that is serving content for www.example.com. For the value of FullyQualifiedDomainName , specify the domain name of the server (such as us-east-2-www.example.com), not the name of the records (www.example.com).

In this configuration, if you create a health check for which the value of FullyQualifiedDomainName matches the name of the records and you then associate the health check with those records, health check results will be unpredictable.

In addition, if the value that you specify for Type is HTTP , HTTPS , HTTP_STR_MATCH , or HTTPS_STR_MATCH , Route 53 passes the value of FullyQualifiedDomainName in the Host header, as it does when you specify a value for IPAddress . If the value of Type is TCP , Route 53 doesn't pass a Host header.



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# File 'route53/cfn_health_check.rb', line 741

def fully_qualified_domain_name
  @fully_qualified_domain_name
end

#health_thresholdNumeric? (readonly)

The number of child health checks that are associated with a CALCULATED health check that Amazon Route 53 must consider healthy for the CALCULATED health check to be considered healthy.

To specify the child health checks that you want to associate with a CALCULATED health check, use the ChildHealthChecks element.

Note the following:

  • If you specify a number greater than the number of child health checks, Route 53 always considers this health check to be unhealthy.
  • If you specify 0 , Route 53 always considers this health check to be healthy.


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# File 'route53/cfn_health_check.rb', line 753

def health_threshold
  @health_threshold
end

#insufficient_data_health_statusString? (readonly)

When CloudWatch has insufficient data about the metric to determine the alarm state, the status that you want Amazon Route 53 to assign to the health check: - Healthy : Route 53 considers the health check to be healthy.

  • Unhealthy : Route 53 considers the health check to be unhealthy.
  • LastKnownStatus : Route 53 uses the status of the health check from the last time that CloudWatch had sufficient data to determine the alarm state. For new health checks that have no last known status, the default status for the health check is healthy.


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# File 'route53/cfn_health_check.rb', line 761

def insufficient_data_health_status
  @insufficient_data_health_status
end

#invertedBoolean, ... (readonly)

Specify whether you want Amazon Route 53 to invert the status of a health check, for example, to consider a health check unhealthy when it otherwise would be considered healthy.



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# File 'route53/cfn_health_check.rb', line 766

def inverted
  @inverted
end

#ip_addressString? (readonly)

The IPv4 or IPv6 IP address of the endpoint that you want Amazon Route 53 to perform health checks on.

If you don't specify a value for IPAddress , Route 53 sends a DNS request to resolve the domain name that you specify in FullyQualifiedDomainName at the interval that you specify in RequestInterval . Using an IP address returned by DNS, Route 53 then checks the health of the endpoint.

Use one of the following formats for the value of IPAddress :

  • IPv4 address : four values between 0 and 255, separated by periods (.), for example, 192.0.2.44 .
  • IPv6 address : eight groups of four hexadecimal values, separated by colons (:), for example, 2001:0db8:85a3:0000:0000:abcd:0001:2345 . You can also shorten IPv6 addresses as described in RFC 5952, for example, 2001:db8:85a3::abcd:1:2345 .

If the endpoint is an EC2 instance, we recommend that you create an Elastic IP address, associate it with your EC2 instance, and specify the Elastic IP address for IPAddress . This ensures that the IP address of your instance will never change.

For more information, see FullyQualifiedDomainName .

Constraints: Route 53 can't check the health of endpoints for which the IP address is in local, private, non-routable, or multicast ranges. For more information about IP addresses for which you can't create health checks, see the following documents:

When the value of Type is CALCULATED or CLOUDWATCH_METRIC , omit IPAddress .



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# File 'route53/cfn_health_check.rb', line 790

def ip_address
  @ip_address
end

#measure_latencyBoolean, ... (readonly)

Specify whether you want Amazon Route 53 to measure the latency between health checkers in multiple AWS regions and your endpoint, and to display CloudWatch latency graphs on the Health Checks page in the Route 53 console.

MeasureLatency is not supported when you specify a value for Type of RECOVERY_CONTROL .

You can't change the value of MeasureLatency after you create a health check.



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# File 'route53/cfn_health_check.rb', line 799

def measure_latency
  @measure_latency
end

#portNumeric? (readonly)

The port on the endpoint that you want Amazon Route 53 to perform health checks on.

Don't specify a value for Port when you specify a value for Type of CLOUDWATCH_METRIC or CALCULATED .



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# File 'route53/cfn_health_check.rb', line 806

def port
  @port
end

#regionsArray<String>? (readonly)

A complex type that contains one Region element for each region from which you want Amazon Route 53 health checkers to check the specified endpoint.

If you don't specify any regions, Route 53 health checkers automatically performs checks from all of the regions that are listed under Valid Values .

If you update a health check to remove a region that has been performing health checks, Route 53 will briefly continue to perform checks from that region to ensure that some health checkers are always checking the endpoint (for example, if you replace three regions with four different regions).



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# File 'route53/cfn_health_check.rb', line 815

def regions
  @regions
end

#request_intervalNumeric? (readonly)

The number of seconds between the time that Amazon Route 53 gets a response from your endpoint and the time that it sends the next health check request.

Each Route 53 health checker makes requests at this interval.

RequestInterval is not supported when you specify a value for Type of RECOVERY_CONTROL .

You can't change the value of RequestInterval after you create a health check.

If you don't specify a value for RequestInterval , the default value is 30 seconds.



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# File 'route53/cfn_health_check.rb', line 828

def request_interval
  @request_interval
end

#resource_pathString? (readonly)

The path, if any, that you want Amazon Route 53 to request when performing health checks.

The path can be any value for which your endpoint will return an HTTP status code of 2xx or 3xx when the endpoint is healthy, for example, the file /docs/route53-health-check.html. You can also include query string parameters, for example, /welcome.html?language=jp&login=y .



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# File 'route53/cfn_health_check.rb', line 835

def resource_path
  @resource_path
end

#routing_control_arnString? (readonly)

The Amazon Resource Name (ARN) for the Route 53 Application Recovery Controller routing control.

For more information about Route 53 Application Recovery Controller, see Route 53 Application Recovery Controller Developer Guide. .



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# File 'route53/cfn_health_check.rb', line 842

def routing_control_arn
  @routing_control_arn
end

#search_stringString? (readonly)

If the value of Type is HTTP_STR_MATCH or HTTPS_STR_MATCH , the string that you want Amazon Route 53 to search for in the response body from the specified resource.

If the string appears in the response body, Route 53 considers the resource healthy.

Route 53 considers case when searching for SearchString in the response body.



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# File 'route53/cfn_health_check.rb', line 851

def search_string
  @search_string
end

#typeString (readonly)

The type of health check that you want to create, which indicates how Amazon Route 53 determines whether an endpoint is healthy.

You can't change the value of Type after you create a health check.

You can create the following types of health checks:

  • HTTP : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTP request and waits for an HTTP status code of 200 or greater and less than 400.
  • HTTPS : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTPS request and waits for an HTTP status code of 200 or greater and less than 400.

If you specify HTTPS for the value of Type , the endpoint must support TLS v1.0 or later.

  • HTTP_STR_MATCH : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTP request and searches the first 5,120 bytes of the response body for the string that you specify in SearchString .
  • HTTPS_STR_MATCH : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTPS request and searches the first 5,120 bytes of the response body for the string that you specify in SearchString .
  • TCP : Route 53 tries to establish a TCP connection.
  • CLOUDWATCH_METRIC : The health check is associated with a CloudWatch alarm. If the state of the alarm is OK , the health check is considered healthy. If the state is ALARM , the health check is considered unhealthy. If CloudWatch doesn't have sufficient data to determine whether the state is OK or ALARM , the health check status depends on the setting for InsufficientDataHealthStatus : Healthy , Unhealthy , or LastKnownStatus .

Route 53 supports CloudWatch alarms with the following features:

  • Standard-resolution metrics. High-resolution metrics aren't supported. For more information, see High-Resolution Metrics in the Amazon CloudWatch User Guide .
  • Statistics: Average, Minimum, Maximum, Sum, and SampleCount. Extended statistics aren't supported.
  • CALCULATED : For health checks that monitor the status of other health checks, Route 53 adds up the number of health checks that Route 53 health checkers consider to be healthy and compares that number with the value of HealthThreshold .
  • RECOVERY_CONTROL : The health check is assocated with a Route53 Application Recovery Controller routing control. If the routing control state is ON , the health check is considered healthy. If the state is OFF , the health check is considered unhealthy.

For more information, see How Route 53 Determines Whether an Endpoint Is Healthy in the Amazon Route 53 Developer Guide .



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# File 'route53/cfn_health_check.rb', line 680

def type
  @type
end

Class Method Details

.jsii_propertiesObject



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# File 'route53/cfn_health_check.rb', line 853

def self.jsii_properties
  {
    :type => "type",
    :alarm_identifier => "alarmIdentifier",
    :child_health_checks => "childHealthChecks",
    :enable_sni => "enableSni",
    :failure_threshold => "failureThreshold",
    :fully_qualified_domain_name => "fullyQualifiedDomainName",
    :health_threshold => "healthThreshold",
    :insufficient_data_health_status => "insufficientDataHealthStatus",
    :inverted => "inverted",
    :ip_address => "ipAddress",
    :measure_latency => "measureLatency",
    :port => "port",
    :regions => "regions",
    :request_interval => "requestInterval",
    :resource_path => "resourcePath",
    :routing_control_arn => "routingControlArn",
    :search_string => "searchString",
  }
end

Instance Method Details

#to_jsiiObject



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# File 'route53/cfn_health_check.rb', line 875

def to_jsii
  result = {}
  result.merge!({
    "type" => @type,
    "alarmIdentifier" => @alarm_identifier,
    "childHealthChecks" => @child_health_checks,
    "enableSni" => @enable_sni,
    "failureThreshold" => @failure_threshold,
    "fullyQualifiedDomainName" => @fully_qualified_domain_name,
    "healthThreshold" => @health_threshold,
    "insufficientDataHealthStatus" => @insufficient_data_health_status,
    "inverted" => @inverted,
    "ipAddress" => @ip_address,
    "measureLatency" => @measure_latency,
    "port" => @port,
    "regions" => @regions,
    "requestInterval" => @request_interval,
    "resourcePath" => @resource_path,
    "routingControlArn" => @routing_control_arn,
    "searchString" => @search_string,
  })
  result.compact
end